its the manufacture.
The NV stamped inside of your ring means that it is from the Nevada Silver Mines, and therefor must be Sterling!
Ring size 6 that's what RJ 6 means.
the base ring is made and stones are set in in china and the .925 means that it is coated with sterling silver
Solico Design Inc. sdi was their jewelry registered hallmark.
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From what I understand some jewelers stamped in the ring size!
jss on ring
The letters RSG stamped on a ring means that the ring was preassembled. Any gems in the ring that is stamped RSG have not been certified.
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Most likely the ring is stamped with 925 instead of 525. This means that the ring is 92.5 percent silver.
krn stamped inside a ring what does it mean